Moms ttc after extended breastfeeding

I breastfeed my daughter (PT) until she was 2 1/2 yearsold but have been trying to conceive since September 2017 recently found out by my doctor (who studies natural medicine) that my breastfeeding made my body think I was pregnant all that time I breastfeed, I was Surprised!!! Was anyone able to get pregnant or anyone experience anything similar?? Apparently we have only been trying since May 2018 that’s when I officially stopped breastfeeding, I’m just a mess I got DAS and had high hopes of being preggo... lots of baby dust to mamas who are trying